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福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义
期刊论文 | 2025 , 41 (1) , 112-134 | 岩石学报
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Abstract :

岩浆作用的不同时期、不同种属的碱性暗色矿物的矿物学信息能反演岩浆演化过程.本文对福建福州鼓山地区的晶洞花岗岩进行了主微量元素、锆石U-Pb同位素定年、Lu-Hf同位素分析,并对其特征暗色矿物进行了电子探针微区分析.鼓山花岗岩发育典型的钠铁闪石、霓石等碱性暗色矿物,地球化学特征表现为高硅、富碱、贫镁钙、低铁铝,属于准铝质到过碱质岩石;其LREE富集,HREE亏损,具有Eu负异常的特征,均显示K、Rb、Th、U等元素相对富集,Ba、Sr以及高场强元素Nb、Ta、P、Ti相对亏损,为典型的高分异的碱性A型花岗岩.LA-ICP-MS锆石U-Pb年龄在95Ma左右,指示其形成时代为晚白垩世早期.锆石的平均ΔFMQ=+5.36,表明岩浆具有较高的氧逸度,钠铁闪石和霓石等碱性暗色矿物形成于岩浆演化的晚期阶段.霓石显示出其高硅、高钠、高铁,低钛、镁、铝、锰的特征.钠铁闪石具有富碱、高铁、多硅、贫钙的特征.碱性花岗岩的锆石εHf(t)值范围为-1.8~+5.4,二阶段模式年龄tDM2为810~1278Ma,岩浆源区为同期底侵的富集地幔来源的陆壳岩石在高温下部分熔融形成,形成于太平洋板块俯冲后撤背景下的伸展环境.

Keyword :

A型花岗岩 A型花岗岩 岩石成因 岩石成因 福州鼓山 福州鼓山 钠铁闪石 钠铁闪石 霓石 霓石

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GB/T 7714 邓心禾 , 王力圆 , 徐净 et al. 福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义 [J]. | 岩石学报 , 2025 , 41 (1) : 112-134 .
MLA 邓心禾 et al. "福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义" . | 岩石学报 41 . 1 (2025) : 112-134 .
APA 邓心禾 , 王力圆 , 徐净 , 陈素余 . 福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义 . | 岩石学报 , 2025 , 41 (1) , 112-134 .
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福州鼓山地区A型花岗岩中碱性暗色矿物特征及其地质意义
期刊论文 | 2025 , 41 (01) , 112-134 | 岩石学报
福建新生代玄武岩及其地幔包体的矿物学特征——对岩石圈地幔性质的制约
期刊论文 | 2025 , 55 (02) , 463-482 | 吉林大学学报(地球科学版)
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福建新生代玄武岩广泛发育且携带了大量地幔包体,其矿物元素特征能够反演岩石圈地幔性质。本文对福建沿海的厦门及内陆地区的明溪、闽清等地新生代玄武岩及其橄榄岩包体中的矿物进行了电子探针、单斜辉石LA-ICP-MS微量元素和原位Sr同位素分析,探究福建地区岩石圈地幔属性特征及演化历史。结果表明:玄武岩及其橄榄岩包体中单斜辉石主要为透辉石,橄榄岩包体根据矿物学特征分为A、B两组,A组(Mg

Keyword :

原位Sr同位素 原位Sr同位素 岩石圈地幔 岩石圈地幔 新生代玄武岩 新生代玄武岩 橄榄岩包体 橄榄岩包体 矿物学 矿物学

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GB/T 7714 颜雪 , 王力圆 , 陈洲鑫 et al. 福建新生代玄武岩及其地幔包体的矿物学特征——对岩石圈地幔性质的制约 [J]. | 吉林大学学报(地球科学版) , 2025 , 55 (02) : 463-482 .
MLA 颜雪 et al. "福建新生代玄武岩及其地幔包体的矿物学特征——对岩石圈地幔性质的制约" . | 吉林大学学报(地球科学版) 55 . 02 (2025) : 463-482 .
APA 颜雪 , 王力圆 , 陈洲鑫 , 张文慧 . 福建新生代玄武岩及其地幔包体的矿物学特征——对岩石圈地幔性质的制约 . | 吉林大学学报(地球科学版) , 2025 , 55 (02) , 463-482 .
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福建新生代玄武岩及其地幔包体的矿物学特征
期刊论文 | 2025 , 55 (2) , 463-482 | 吉林大学学报(地球科学版)
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福建新生代玄武岩广泛发育且携带了大量地幔包体,其矿物元素特征能够反演岩石圈地幔性质.本文对福建沿海的厦门及内陆地区的明溪、闽清等地新生代玄武岩及其橄榄岩包体中的矿物进行了电子探针、单斜辉石LA-ICP-MS微量元素和原位Sr同位素分析,探究福建地区岩石圈地幔属性特征及演化历史.结果表明:玄武岩及其橄榄岩包体中单斜辉石主要为透辉石,橄榄岩包体根据矿物学特征分为A、B两组,A组(Mg#>90)代表了古老难熔岩石圈地幔,B组(Mg#<90)代表了经改造后年轻饱满岩石圈地幔.A组橄榄岩包体中的单斜辉石高场强元素Nb、Ti轻微负异常,Hf、Zr、Ta强烈负异常.B组橄榄岩包体中的单斜辉石有所不同,高场强元素Zr、Hf轻微负异常,大离子亲石元素Ba强烈负异常.玄武岩斑晶和基质中的单斜辉石均呈现LREE富集、HREE亏损的特征,且单斜辉石斑晶边部比核部亏损高场强元素Th、Nb,富集大离子亲石元素Sr、Eu.橄榄岩包体中大部分A组和B组单斜辉石都经历了硅酸盐熔体交代,少数A组单斜辉石介于硅酸盐熔体交代和碳酸盐熔体交代之间.单斜辉石原位Sr同位素范围在0.702 57~0.703 67之间,大多单斜辉石边部的87Sr/86Sr值比核部要高,可能受到了高87Sr/86Sr值物质交代作用.福建橄榄岩包体很可能代表的是太平洋板块俯冲软流圈地幔经历减压上升后新改造的岩石圈地幔.

Keyword :

原位Sr同位素 原位Sr同位素 岩石圈地幔 岩石圈地幔 新生代玄武岩 新生代玄武岩 橄榄岩包体 橄榄岩包体 矿物学 矿物学

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GB/T 7714 颜雪 , 王力圆 , 陈洲鑫 et al. 福建新生代玄武岩及其地幔包体的矿物学特征 [J]. | 吉林大学学报(地球科学版) , 2025 , 55 (2) : 463-482 .
MLA 颜雪 et al. "福建新生代玄武岩及其地幔包体的矿物学特征" . | 吉林大学学报(地球科学版) 55 . 2 (2025) : 463-482 .
APA 颜雪 , 王力圆 , 陈洲鑫 , 张文慧 . 福建新生代玄武岩及其地幔包体的矿物学特征 . | 吉林大学学报(地球科学版) , 2025 , 55 (2) , 463-482 .
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The temporal and spatial evolution of ore-forming fluids during the formation of the Dulong deposit, Southwest China: Linkage with in mineralization SCIE
期刊论文 | 2025 , 290 | JOURNAL OF ASIAN EARTH SCIENCES
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The Dulong deposit is a major cassiterite-sulfide skarn deposit in Southwest China, hosting significant In resources (7,000t). Although the occurrence of In has been studied in detail, its spatiotemporal distribution and controlling factors remain poorly understood. This study therefore systematically analyzes fluid inclusions, chlorite geochemistry, and combined with published In contents from sphalerite to comprehensively examine ore-forming fluid evolution and its impact on In mineralization. The fluid inclusions data show that S-type, Ltype, and V-type can be recognized at Dulong. The S-type inclusions predominantly occur in pyroxene from prograde stage and coexist with L-type inclusions, suggesting that fluid boiling occurred. The homogenization temperature and salinity of fluids show a significant decrease from prograde stage (468-560 degrees C, 44.7-49.6 % NaCleqv) to retrograde stage (365-375 degrees C, 3.1-3.7 % NaCleqv), indicating potential mixing with meteoric waters. From retrograde to sulfide stage, both temperature and salinity decrease slightly (from 365-375 degrees C to 210-365 degrees C, and 3.1 %-3.7 % NaCleqvto 0.3 %-2.6 % NaCleqv, respectively), inferring that fluid cooling probably was the key factor for sulfide precipitation and associated In enrichment. The chlorite results show that, from bottom to top of the open pit, this variation in trace element concentrations is dominantly related to the decrease in temperature that occurs during the migration of hydrothermal fluid. The fluid temperatures correlate with increased In concentrations in sphalerite, suggesting temperature controls In enrichment. Additionally, the Ti/Sr ratio in chlorite indicate the possible hydrothermal center at the bottom of the Manjiazhai ore block (approximately 1152 m-depth), implying that the Dulong deposit is probably a distal skarn deposit.

Keyword :

Chlorite Chlorite Dulong deposit Dulong deposit Fluid evolution Fluid evolution Fluid inclusions Fluid inclusions Indium Indium

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GB/T 7714 Fu, Jieyong , Xu, Jing , Zhao, Taiping et al. The temporal and spatial evolution of ore-forming fluids during the formation of the Dulong deposit, Southwest China: Linkage with in mineralization [J]. | JOURNAL OF ASIAN EARTH SCIENCES , 2025 , 290 .
MLA Fu, Jieyong et al. "The temporal and spatial evolution of ore-forming fluids during the formation of the Dulong deposit, Southwest China: Linkage with in mineralization" . | JOURNAL OF ASIAN EARTH SCIENCES 290 (2025) .
APA Fu, Jieyong , Xu, Jing , Zhao, Taiping , Li, Jiadai , Wang, Liyuan . The temporal and spatial evolution of ore-forming fluids during the formation of the Dulong deposit, Southwest China: Linkage with in mineralization . | JOURNAL OF ASIAN EARTH SCIENCES , 2025 , 290 .
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The temporal and spatial evolution of ore-forming fluids during the formation of the Dulong deposit, Southwest China: Linkage with in mineralization Scopus
期刊论文 | 2025 , 290 | Journal of Asian Earth Sciences
A genetic link between magmatic evolution and indium mineralization in the Dulong Sn-polymetallic deposit, Southwest China: Constraints from the compositions of mica and apatite SCIE
期刊论文 | 2025 , 289 | JOURNAL OF ASIAN EARTH SCIENCES
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The Dulong deposit is a world-class Sn-polymetallic deposit with indium mineralization, which is associated with highly evolved Late Cretaceous S-type granites, indicating the magmatism is crucial for the indium enrichment. Through integrated in-situ geochemical analyses of mica and apatite across variably fractionated granites and country rocks, this study reveals a systematic evolution of redox conditions, halogen chemistry, and metal enrichment during magmatic differentiation. As magmatic evolution progresses, indium and tin contentratons in mica increase progressively, reaching peak vales in the late stage of evolution at Dulong deposit. Notably, indium concentration in muscovite is greater than that in biotite, when muscovite converts into phengite. Apatite and mica compositions indicate low oxygen fugacity (fO(2)) magmatism. Fe-rich biotite in Sn-In-bearing granites contrasts with Mg-biotite in Sn-poor systems, with Fe3+/(Fe2++Fe3+) ratios < 0.2 confirming reduced fO(2) conditions conducive to indium melt incorporation. Apatite geochemistry reinforces this: low SO3 (0.01-0.08 wt%), As depletion (14.54-42.10 ppm), and marked negative Eu anomalies (Eu/Eu* <0.4). Multi-proxy evidence collectively confirms a reduced magmatic system. Integrated proxies confirm a reduced magmatic system where progressive redox reduction during differentiation fosters indium enrichment, enhancing metallogenic potential. Concurrently, apatite halogen signatures track magmatic evolution: sustained F enrichment with late Cl spikes aligns with mantle-derived inputs evidenced by mafic enclaves. Although Cl concentrations remain low in the early magmatic stages, their subsequent dramatic increase correlates temporally and genetically with marked enrichment of In and Sn during later evolutionary phases. The mixing of mantle-derived magmas may bring in Cl-rich fluids/melts and related ore-forming materials, which promotes indium mineralization. The concurrent enrichment of halogen elements, F and Cl, plays a crucial role in the extraordinary accumulation of indium.

Keyword :

Apatite Apatite Dulong Sn-polymetallic deposit Dulong Sn-polymetallic deposit Indium Indium Magmatic evolution Magmatic evolution Mica Mica

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GB/T 7714 Wang, Liyuan , Deng, Xinhe , Xu, Jing et al. A genetic link between magmatic evolution and indium mineralization in the Dulong Sn-polymetallic deposit, Southwest China: Constraints from the compositions of mica and apatite [J]. | JOURNAL OF ASIAN EARTH SCIENCES , 2025 , 289 .
MLA Wang, Liyuan et al. "A genetic link between magmatic evolution and indium mineralization in the Dulong Sn-polymetallic deposit, Southwest China: Constraints from the compositions of mica and apatite" . | JOURNAL OF ASIAN EARTH SCIENCES 289 (2025) .
APA Wang, Liyuan , Deng, Xinhe , Xu, Jing , Zhao, Taiping , Liu, Wenyuan . A genetic link between magmatic evolution and indium mineralization in the Dulong Sn-polymetallic deposit, Southwest China: Constraints from the compositions of mica and apatite . | JOURNAL OF ASIAN EARTH SCIENCES , 2025 , 289 .
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A genetic link between magmatic evolution and indium mineralization in the Dulong Sn-polymetallic deposit, Southwest China: Constraints from the compositions of mica and apatite Scopus
期刊论文 | 2025 , 289 | Journal of Asian Earth Sciences
Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou SCIE
期刊论文 | 2025 , 41 (1) , 112-134 | ACTA PETROLOGICA SINICA
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The magmatic evolution process can be reconstructed by using the mineralogical data from various alkaline mafic minerals from different stages of magmatism. This study presents an integrated bulk-rock elemental composition, zircon U-Pb dating, Lu-Hf isotopic geochemistry, and electron probe microregion analysis of key mafic minerals in miarolitic granites from Gushan area, coastal Fujian Province. The Gushan granite hosts typical alkaline mafic minerals, such as arfvedsonite and aegirine, characterized by high silicon content, alkali enrichment, low magnesium and calcium, and reduced iron and aluminum levels. These rocks are classified as para-aluminous to peralkaline and exhibit negative Eu anomalies, enrichment in light rare earth elements (LREE), and depletion in heavy rare earth elements (HREE). Granites are enriched in K, Rb, Th, U, while being depleted in Ba, Sr and high field strength elements Nb, Ta, P and Ti, identifying them as highly fractionated alkaline A-type granites. LA-ICP-MS zircon U-Pb dating yields an age of approximately 95 Ma, indicating their formation in early Late Cretaceous. The average Delta FMQ of zircon is +5.36, indicating that the magma possessed a high oxygen fugacity. Alkaline mafic minerals such as arfvedsonite and aegirine crystallized during the late stage of magmatic evolution. Aegirine characterized by high silicon, sodium and iron contents, along with low titanium, magnesium, aluminum and manganese. Arfvedsonite exhibits enrichment in alkali and iron, high silicon content, and depletion in calcium. The zircon epsilon(Hf) (t) values of the alkaline granite range from -1.8 to +5.4, with two-stage model ages (t(DM2)) spanning from 810 Ma to 1278 Ma. The magma source is attributed to partial melting of enrich mantle-derived continental crust rocks formed during contemporaneous underplating. This process occurred in an extensional environment driven by the subduction and rollback of the Pacific plate.

Keyword :

Aegirine Aegirine Arfvedsonite Arfvedsonite A-type granites A-type granites Fuzhou Gushan Fuzhou Gushan Petrogenesis Petrogenesis

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GB/T 7714 Deng, Xinhe , Wang, Liyuan , Xu, Jing et al. Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou [J]. | ACTA PETROLOGICA SINICA , 2025 , 41 (1) : 112-134 .
MLA Deng, Xinhe et al. "Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou" . | ACTA PETROLOGICA SINICA 41 . 1 (2025) : 112-134 .
APA Deng, Xinhe , Wang, Liyuan , Xu, Jing , Chen, Suyu . Characteristics and geological significance of alkaline mafic minerals in A-type granite in Gushan area, Fuzhou . | ACTA PETROLOGICA SINICA , 2025 , 41 (1) , 112-134 .
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Characteristics and geological significance of alkaline mafic minerals in A- type granite in Gushan area, Fuzhou; [福州鼓山地区A 型花岗岩中碱性暗色矿物特征及其地质意义] Scopus
期刊论文 | 2025 , 41 (1) , 112-134 | Acta Petrologica Sinica
Characteristics and geological significance of alkaline mafic minerals in A- type granite in Gushan area, Fuzhou EI
期刊论文 | 2025 , 41 (1) , 112-134 | Acta Petrologica Sinica
Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology SCIE
期刊论文 | 2024 , 132 , 113-135 | GONDWANA RESEARCH
WoS CC Cited Count: 1
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Iron, Cu, Pb-Zn, and W-Mo skarn deposits occur in the Gangdese metallogenic belt, Tibet. A lack of precise age constraints for mineralization hinders understanding of the processes contributing to skarn mineralization, particularly identification of the causative intrusions. In this study, new garnet U-Pb geochronological data are provided for the Qiagong (Fe) and Jiaduobule (Fe-Cu) skarns. We place particular emphasis on skarn garnet mineralogy, using scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), to characterize garnet textures, compositions, and U-Pb isotope systematics. All garnets studied belong to the grossular-andradite series and display oscillatory compositional zoning (And 100 Gr 0 to And 20 Gr 80 ). Andradite-dominated garnet features a chondrite-normalized REE fractionation pattern exhibiting enrichment in LREE relative to HREE and a positive Eu anomaly, whereas grossular-dominated garnet displays relative LREE depletion and a marked flat HREE fractionation trend. Ore-forming elements, including Sn, W, As, and U, are detected at concentrations up to several hundreds of ppm in the same garnets. Concentrations of W and As are higher in andradite and correlate positively with one another. The correlation between U, Sn and the major oxide composition of garnet is insignificant, potentially resulting from the changing valence states of these elements under different redox conditions. Together with previously published and limited new data for the Gebunongba (Fe), Ri'a (Cu), and Hahaigang (W-Mo) skarns, the new garnet U-Pb age data indicate that the major Fe, Pb-Zn, and W-Mo mineralization event in the Gangdese metallogenic belt took place between 65 Ma and 50 Ma, with marked peaks at - 65 Ma and - 53 Ma. Partial melting of a crustal-dominated source due to the slab rollback (-65 Ma) and break off (-53 Ma) of Yarlug-Zangbo Tethyan Ocean and subsequent asthenosphere upwelling induced this regional event during the Paleogene to early Eocene. A less common but regionally widespread Cu (+/- Au) mineralization event in the same belt formed during the Late Cretaceous (-85 Ma) and may have resulted from the coupled influence of the northward subduction of the Yarlug-Zangbo Tethyan Ocean and the southward subduction of the Bangong-Nujiang Tethyan Ocean. This contribution highlights the potential significance of the Late Cretaceous Cu(+/- Au) event and hence the prospectivity of the belt for both skarn and porphyry systems. More broadly, our findings carry implications for Neo-Tethyan metallogeny in the region extending from southwestern China to eastern Europe during the Late Cretaceous. (c) 2024 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.

Keyword :

Gangdese belt Gangdese belt Garnet Garnet LA-ICP-MS LA-ICP-MS Skarn Skarn Tibet Tibet U-Pb geochronology U-Pb geochronology

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GB/T 7714 Xu, Jing , Li, Jiadai , Cook, Nigel J. et al. Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology [J]. | GONDWANA RESEARCH , 2024 , 132 : 113-135 .
MLA Xu, Jing et al. "Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology" . | GONDWANA RESEARCH 132 (2024) : 113-135 .
APA Xu, Jing , Li, Jiadai , Cook, Nigel J. , Ciobanu, Cristiana L. , Wu, Shitou , Wade, Benjamin P. et al. Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA-ICP-MS garnet U-Pb geochronology . | GONDWANA RESEARCH , 2024 , 132 , 113-135 .
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Redefining timing, genesis and geodynamic setting of polymetallic skarn mineralization, Gangdese belt, Tibet, from LA–ICP–MS garnet U–Pb geochronology Scopus
期刊论文 | 2024 , 132 , 113-135 | Gondwana Research
江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 CSCD PKU
期刊论文 | 2024 , 43 (1) , 86-100 | 地质通报
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Abstract :

江西省宜丰县甘坊地区是一个重要的稀有金属成矿区,目前在甘坊岩体内发现了一系列锂铷稀有多金属矿床(点),但其成矿机制尚不明确.选择甘坊岩体内洞上花岗岩作为研究对象,采用电子探针技术对多种花岗岩中的长石和云母类矿物进行了精细的结构和成分分析.结果表明,云母类矿物是铷的主要载体(Rb2O<1.07%),长石类矿物中Rb含量低(Rb2O<0.11%),尤其是在钠长石中Rb的含量几乎为 0.含铷云母主要是白云母花岗岩、伟晶岩和细晶岩中的多硅白云母-铁锂云母类,其中铷可能主要通过与钠双置换云母结构中的层间钾离子存在.矿物结构特征显示,洞上花岗岩经历了明显的岩浆结晶分异和流体交代作用.结晶分异作用可能是洞上花岗岩Rb富集成矿的关键机制,而后期流体交代蚀变过程对铷的聚集作用有限.结合前人研究成果,笔者认为甘坊地区具有较好的锂、铷等稀有金属成矿潜力,后续的找矿勘查应注重与早白垩世—晚侏罗世(140~150 Ma)高分异花岗岩相关的锂、铷等稀有金属矿床的找矿工作.

Keyword :

江西 江西 洞上花岗岩 洞上花岗岩 甘坊岩体 甘坊岩体 矿产勘查工程 矿产勘查工程 稀有金属 稀有金属 花岗岩 花岗岩

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GB/T 7714 姜军胜 , 郭欣然 , 徐净 et al. 江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 [J]. | 地质通报 , 2024 , 43 (1) : 86-100 .
MLA 姜军胜 et al. "江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制" . | 地质通报 43 . 1 (2024) : 86-100 .
APA 姜军胜 , 郭欣然 , 徐净 , 田立明 , 熊光强 , 王力圆 et al. 江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 . | 地质通报 , 2024 , 43 (1) , 86-100 .
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江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 Scopus CSCD PKU
期刊论文 | 2024 , 43 (1) , 86-100 | 地质通报
江西甘坊洞上稀有金属花岗岩中铷矿化特征及成因机制 CSCD PKU
期刊论文 | 2024 , 43 (01) , 86-100 | 地质通报
福建省新生代玄武岩40Ar/39Ar年代学及地质意义 PKU
期刊论文 | 2023 , 51 (1) , 118-124 | 福州大学学报(自然科学版)
Abstract&Keyword Cite Version(2)

Abstract :

对福建省沿海至内陆出露的4件新生代玄武岩进行40 Ar/39 Ar年龄测试,对玄武岩中橄榄石斑晶进行电子探针测试;其中洋底和柳城玄武岩首次获得精确的40 Ar/39 Ar年龄数据.结果显示,闽西明溪40 Ar/39 Ar年龄数据为(1.44±0.11)Ma,柳城为(17.35±0.93)Ma;闽中洋底玄武岩年龄为(11.71±0.44)Ma;闽东厦门玄武岩年龄为(17.0±0.36)Ma.结合前人年龄数据,福建省新生代玄武岩整体表现出从闽东至闽西年龄逐渐减小的趋势.橄榄石斑晶电子探针数据显示闽东至闽西玄武岩碱性程度逐渐增加,可能指示岩浆熔融程度由沿海至内陆逐渐减少,岩石圈厚度由东向西逐渐增厚.最新获得的闽西柳城玄武岩40Ar-39Ar年龄为(17.35±0.93)Ma,与东部沿海玄武岩相似,推测可能是太平洋板块北西向俯冲时引起的岩浆扰动作用形成的.

Keyword :

40 Ar/ 39 Ar年龄 40 Ar/ 39 Ar年龄 地质意义 地质意义 新生代玄武岩 新生代玄武岩 橄榄石斑晶 橄榄石斑晶 福建省 福建省

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GB/T 7714 严率旗 , 张文慧 , 王力圆 et al. 福建省新生代玄武岩40Ar/39Ar年代学及地质意义 [J]. | 福州大学学报(自然科学版) , 2023 , 51 (1) : 118-124 .
MLA 严率旗 et al. "福建省新生代玄武岩40Ar/39Ar年代学及地质意义" . | 福州大学学报(自然科学版) 51 . 1 (2023) : 118-124 .
APA 严率旗 , 张文慧 , 王力圆 , 聂俊韬 . 福建省新生代玄武岩40Ar/39Ar年代学及地质意义 . | 福州大学学报(自然科学版) , 2023 , 51 (1) , 118-124 .
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福建省新生代玄武岩~(40)Ar/~(39)Ar年代学及地质意义 PKU
期刊论文 | 2023 , 51 (01) , 118-124 | 福州大学学报(自然科学版)
福建省新生代玄武岩~(40)Ar/~(39)Ar年代学及地质意义 PKU
期刊论文 | 2023 , 51 (01) , 118-124 | 福州大学学报(自然科学版)
Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases" SCIE
期刊论文 | 2023 , 401 | PRECAMBRIAN RESEARCH
WoS CC Cited Count: 1
Abstract&Keyword Cite Version(1)

Abstract :

The Ediacaran glaciation has garnered considerable attention for its potential biological impact because it witnesses the birth of complex animals. Many researchers question whether large-scale regional or even global glaciations, represent critical barriers to the evolution of macroscopic animals. So how did complex animals survive during a major glaciation? One possible explanation is the existence of isolated shallower refugia or icefree oases. However, the sedimentary evolution of such ice-free oases and how they could support the survival of complex life forms are not yet fully understood. This study focuses on the inter-diamictite black sediments in the Ediacaran Talisayi Formation of NW China (Yili block), which may represent a habitable ice-free oasis during the Gaskiers glaciation. The sedimentary facies and geochemical analyses indicate that these deposits were formed in oxygenated and photic shallow glacier lake environments with highly developed microbial mat substrates, it was formed during a short-lived partial deglaciation with enhanced weathering. And diverse organic-wall microfossils were found within the inter-diamictite black sediments. Furthermore, based on the growth habits of modern microbial algal mats, a paleontological clock can be established to estimate the duration of partial deglaciation, which may have lasted only for thousands of years. The ice-free oasis formed during this period could potentially harbor complex ecosystems, providing valuable ecological and temporal windows for the evolution of complex animals.

Keyword :

Ediacaran Ediacaran Gaskiers glaciation Gaskiers glaciation Ice free oasis Ice free oasis Microbial mat Microbial mat Partial deglaciation Partial deglaciation

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GB/T 7714 Zhang, Xinsong , An, Yanqing , Chen, Yarui et al. Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases" [J]. | PRECAMBRIAN RESEARCH , 2023 , 401 .
MLA Zhang, Xinsong et al. "Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases"" . | PRECAMBRIAN RESEARCH 401 (2023) .
APA Zhang, Xinsong , An, Yanqing , Chen, Yarui , Du, Weidong , Wang, Liyuan . Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic "ice-free oases" . | PRECAMBRIAN RESEARCH , 2023 , 401 .
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Microbial mat, organic-wall microfossils and geochemistry of the Ediacaran inter-diamictite black sediments in NW China: A short-lived habitable benthic, oxic and photic “ice-free oases” Scopus
期刊论文 | 2024 , 401 | Precambrian Research
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